document.write( "Question 822074: A can do a piece of work in 30 days,and B can do the same work in 40 days,if both do together then how many days it takes to complete the same work.
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Algebra.Com's Answer #494914 by richwmiller(17219)\"\" \"About 
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1/30+1/40=1/x
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\n" ); document.write( "x=120/7=17.14\r
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